LED-based Vis-NIR spectrally tunable light source-the optimization algorithm

M Lukovic, V Lukovic, I Belca… - Journal of the …, 2016‏ - jeos.edpsciences.org
Background: A novel numerical method for calculating the contributions of individual diodes
in a set of light emitting diodes (LEDs), aimed at simulating a blackbody radiation source, is …

Optimizing spectral compositions of multichannel LED light sources by IES color fidelity index and luminous efficacy of radiation

F Zhang, H Xu, Z Wang - Applied optics, 2017‏ - opg.optica.org
The trade-off between the color fidelity index (R f) released recently by the Illuminating
Engineering Society of North America (IES) and luminous efficacy of radiation (LER) was …

Illumination discrimination for chromatically biased illuminations: Implications for color constancy

S Aston, A Radonjić, DH Brainard… - Journal of …, 2019‏ - jov.arvojournals.org
We measured discrimination thresholds for illumination changes along different chromatic
directions starting from chromatically biased reference illuminations. Participants viewed a …

An LED-based spectrally tuneable light source for visible and near-infrared spectroscopy analysis: A case study for sugar content estimation of citrus

X Fu, X Wang, X Rao - Biosystems engineering, 2017‏ - Elsevier
Light source plays an important role in visible and near-infrared (Vis–NIR) spectroscopy
detection systems. Traditionally, halogen tungsten lamps are used in most studies and …

[HTML][HTML] What# theDress reveals about the role of illumination priors in color perception and color constancy

S Aston, A Hurlbert - Journal of vision, 2017‏ - iovs.arvojournals.org
The disagreement between people who named# theDress (the Internet phenomenon of
2015)“blue and black” versus “white and gold” is thought to be caused by individual …

[HTML][HTML] Illumination discrimination in real and simulated scenes

A Radonjić, B Pearce, S Aston, A Krieger… - Journal of …, 2016‏ - tvst.arvojournals.org
Characterizing humans' ability to discriminate changes in illumination provides information
about the visual system's representation of the distal stimulus. We have previously shown …

Melanopic limits of metamer spectral optimisation in multi-channel smart lighting systems

B Zandi, A Eissfeldt, A Herzog, TQ Khanh - Energies, 2021‏ - mdpi.com
Modern indoor lighting faces the challenge of finding an appropriate balance between
energy consumption, legal requirements, visual performance, and the circadian …

Matched illumination: using light modulation as a proxy for a color filter that makes a camera more colorimetric

Y Zhu, GD Finlayson - Optics Express, 2022‏ - opg.optica.org
In previous work, it was shown that a camera can theoretically be made more colorimetric–
its RGBs become more linearly related to XYZ tristimuli–by placing a specially designed …

The time course of chromatic adaptation under immersive illumination

G Gupta, N Gross, R Pastilha, A Hurlbert - BioRxiv, 2020‏ - biorxiv.org
Chromatic adaptation is a major contributory mechanism to constancy, yet its extent
depends on many factors-spectral, spatial and temporal-which vary between studies and …

Temporal dynamics of daylight perception: Detection thresholds

R Pastilha, G Gupta, N Gross, A Hurlbert - Journal of vision, 2020‏ - jov.arvojournals.org
Temporal changes in illumination are ubiquitous; natural light, for example, varies in color
temperature and irradiance throughout the day. Yet little is known about human sensitivity to …